1. Why does many sigma projects or lean projects fail? (20 Points) (Answer in no more than 5 sentences, please use your own sentences, use citations as needed) 2. The local supermarket buys lettuce each day to ensure really fresh produce. Each morning any lettuce that is left from the previous day is sold to a dealer that resells it to farmers who use it to feed their animals. This week the supermarket can buy fresh lettuce for $5.00 a box. The lettuce is sold for $10.00 a box and the dealer that sells old lettuce is willing to pay $1.50 a box. Past history says that tomorrow's demand for lettuce averages 260 boxes with a standard deviation of 36 boxes. How many boxes of lettuce should the supermarket purchase tomorrow? (20 Points) 3. Daily demand for a product is 60 units with a standard deviation of 10 units. The review period is 10 days, and lead time is 2 days. At the time of review there are 200 units in stock. If 97 percent service probability is desired, how many units should be ordered? (20 Points) 4. GD Incorporated produces Aluminium contacts that it uses in switches and relays. GDI needs to determine the order quantity, to meet the annual demand at the lowest cost. The price of Aluminium depends on the quantity ordered. Here are price-break and other data for the problem: Price Of Aluminium 1-2499 LB $0.82 $0.81 $0.80 2500-4999 LB 5000 and above Annual Demand Holding Cost Ordering Cost 50000 LB per year 20% per unit per year of the price of Aluminium $30 What quantity should be ordered? (40 Points)